I have been writing C++ code snippets sporadically to speed things up in R via Rcpp, but now I would like to do more using Armadillo library, but I am having trouble installing it.
The README file instructs to create a location for "include" folder and tell your compiler to use that location for header files (in addition to the locations it uses already).
If I save the "include" folder into C:\Users\me\Documents\ARMADILLO, then how do I instruct the compiler to use the appropriate location?
After some search, I tries typing into command line the following (after prompt: C:\Users\me>):
g++ Documents\ARMADILLO\include, but it did not work ("permission denied"). I hence wonder how this should be done.
Moreover, the README file finally instructs to: Configure your compiler to link with LAPACK and BLAS - I would very much appreciate an advice how this should be done as well.
Thanks a lot!
PS: I have Windows 7 and VS Express 2013 for Desktop.
Visual Studio uses solutions which are containers of projects. Each project has a settings page (right click the project in the Solution Explorer window). Under "Configuration properties" there's a VC++ Directories page, which in turn lists "Include Directories". Append ;C:\Users\me\Documents\ARMADILLO
BTW, I find it useful to put such libs under C:\libs\. Saves on path length.
Related
I'm modifying a simple example project (blinky) from the nRF SDK. I added a header file and a .c file in a new folder inside the project directory then added that path ./lib to the common preprocessor user include directories. I then included the header to main.c.
I can compile the new library on its own but when I build the whole project, I get Build failed error with no stated reason to follow up.
Here is an image of that:
Does anyone here know how to beat this?
I haven't used Segger Studio specifically, but it seems to be the CrossWorks IDE underneath.
In CrossWorks, you have to do the following:
Download & install all relevant libs from inside the IDE, under Tools -> Packages -> Install packages. Grab your specific target MCU as well as any specific boards or libraries you'll be using. In case some needed lib is missing here, you will get very weird errors.
In the project, click on the project name itself in "project explorer". Then in the properties window, check settings (this is a bit different in different versions of CrossWorks, might have to right click and pick properties in older versions). Under "user include directories" you should have something like this:
$(DeviceIncludePath)
$(TargetsDir)/NameOfMCU/Include
$(PackagesDir)/CMSIS_4/CMSIS/Include
$(ProjectDir)/NameOfDirectory
Where "NameOfMCU" is the name of the MCU family used, CMSIS should be there in case you are using any ARM, "NameOfDirectory" is the name of your custom directory (you can add several).
Also, get the debug build working first, before switching to release build.
I have been programming a game in c++ using the sfml library. However, I would like to adjust some of the code of that library, and use that altered code in my project.
So instead of linking the dll I would like to add the source code and then play with that source code. (e.g. for speed optimization).
I know that doing something like that is generally speaking a bad idea. Howeover, I want to learn by playing around a bit and trying different things.
So how would I add the sfml source code to my c++ project in MS visual studio. Note that I am a total noob. I already tried adding the sfml folder that I downloaded from git in the project properties page called "Additional Include Directories", but i am getting errors, of the form "Cannot open include file: 'SFML/Graphics/GLCheck.hpp': No such file or directory" so I guess that i have not yet done enough.
If you want to modify the source code in the library, all you'd have to do is just navigate to where you have SFML installed and go into the code files with a text editor and edit them.
Then, you could link the library to your VS project the same way you would normally but that library is now modified by you.
Seeing as you have a search directory issue already in VS, you must fix that first. Fix that and then go and modify the library's .hpp, .h, .cpp, whatever files in-place.
To fix the search issue.... I don't use VS for graphics, I use CodeBlocks so I am not sure about their GUI to link libraries and change search directories... but, find out where you installed SFML. Check your /usr/include/, it's probably there. Specify that path in the search directories. Just go and find where that GLCheck.hpp file is located. For Example: Say it's full path is /usr/include/SFML/Graphics/GLCheck.hpp... then /usr/include/SFML/Graphics/ or just /usr/include/ (VS might handle it recursively) needs to be in the list of SEARCH DIRECTORIES.
This may be a very simple question but I haven't been able to figure it out so any help is appreciated.
I have a header that is located in a general folder because I want to use it in several projects for example:
C:\user\geninclude\program\header.h
I created a new empty project with a very simple main, in the main I put
#include <program/header.h>
I then went to the project properties and in VC++ in include directories added C:\user\geninclude\
but when I tried to build the program the program tells me it cannot find header.h because is not in the current directory or in the build system path.
I also tried in the project properties in C/C++ general Additional Include Directories adding C:\user\geninclude\ but still the same error.
I know is something simple I am missing, but I don't know what, I am very new to this just learning.
For reference I am using Visual Studio 2013.
Thank you in advance for your help.
UPDATE: Thank you all for your kind responses, I have tried everything you have told me (check release vs debug in both instances, change / for \ and <> for "", and double checking the header and still the system does not see it. It really is very weird. I'll keep trying...
Please check if your file is really an header file otherwise it won't appear on include.
What you can also do (as a workaround if you need that method fast) is to put your header file (or folder with header files) on the visual studio "include" folder. The path should look like this "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include"
PS: You should also check the properties configuration when you're adding the path to VC++ include directories. You could be adding the path to debug configuration and trying to run it in release mode.
You do indeed want
Project Properties -> Configuration Properties -> C/C++ -> Additional Include Directories
(or something close to that; I'm using VS 2008). Make sure the configuration you're editing in the top left (debug/release) matches the configuration you're building with (typically visible up top in the main window). So it sounds like you may have done it correctly; I'd double-check for the file's existence in that location. You could also try program\header.h instead of program/header.h. If none of those work, try adding C:\user\geninclude\program to the include directories (no \ at the end) and change it to #include "header.h". If that doesn't work either, you've almost surely got the header file in the wrong spot.
Another thing that can cause include files not being picked up is a difference between the platform set in your c++ project's Property Pages and your "Active Solution Platform" in configuration manager. Can just check if one is set to x64 and the other x86
check if you have specified the path correctly. for example I had written cpp instead of c++ and therefore suffered a lot and wasted like an hour searching here and there.
For Visual Studio 2019 users:
Project(P) > yours_project_name properties(P) > Platform Toolset Visual Studio 2019(V###)
Reasoning: You might download the project from Online and they used other version of Visual Studio as Platform.
Project(P) > yours_project_name properties(P) > Windows SDK Version ##.#(latest installed version).
Reasoning: You might download the project from Online and they used version SDK 8.0 while you have SDK 10.0
ntucvhw
I am trying to solve a coupled set of ODE's in C++, and I have decided that I want to try out odeint (available here) as I have read many good things about it. However I am having compiling the examples that are included in the package. Here is the situation:
So far I have only downloaded the package and extracted it. I am running Visual C++ 6 on Windows XP and I am compiling the example "simple1d". I get the error message: "Cannot open include file: 'boost/config.hpp': No such file or directory".
It is not clear to me what I am missing. Do I need the full boost library to make this work? I was under the impression that ODEINT is a "standalone" package.
Your error says that compiler can not find the boost libraries. You should download them from boost.org and also add them to your header path.
Where did you download and extract the package to? The package homepage says that it's a header-only package, so you only need to let Visual find the header files. I haven't used Visual in a while, but a quick google of something like "Visual 6 add header path" should be a good place to start. Take a look at Where does Visual Studio look for C++ header files?.
Quoting from this page:
Within Visual Studio, go to the Project Settings dialog. We want to change the settings for both Debug and Release versions, so under the Settings For field, select "All Configurations". Under the C/C++ Tab, select Preprocessor options.
The package tarball has a directory called boost: you want to add the path of that directory into the Additional include directories box and then #include <boost/numeric/odeint/config.hpp> in your code.
Update
It appears, then, that you already have the odeint headers installed properly: the file boost/numeric/odeint/config.hpp has a line #include <boost/config.hpp>, which is what visual must be complaining about; so I guess the package is not standalone. It must need other boost header files installed. I can't find anything in either the package homepage or the package tarball that mentions any dependencies, so I suppose you should try to install boost too. Download version 1.51.0 here, and this is the windows documentation.
You must download odeint from http://headmyshoulder.github.io/odeint-v2/downloads.html and Boost c++ libraries from http://www.boost.org/users/history/version_1_51_0.html.
If you use codeblocks right click your project, select build oprions, select Search Directories and add two references one for odeint and one for boost.
Made a new project, added main.cpp and wrote the code at this URL:
http://www.boost.org/doc/libs/1_43_0/doc/html/boost_asio/example/echo/async_tcp_echo_server.cpp
Also, added the appropriate include path.
What's next?!?!! It seems like a darn mystery to build a boost code!
Been digging on it for more than 10 hours.
Can anyone give a straightforward answer on how to build the boost library from the code under windows, VC9?
You need to use bjam. It is responsible for creating the libraries that your application will use. Once you use bjam, you are going to need to instruct your project to include the lib file. You do this by going into the project's properties -> Configuration Properties -> Linker -> General. Add the directory which created the lib file to Additional Library Directories. You should be capable of correctly linking after that.
I believe that this link describes the steps better than I could attempt in a post
#bogertron: I want to hug you! (:
So, at last, with a real head ache, I've managed to do so.
The exact steps I took, so others will be saved from the head ache:
Went to http://www.boost.org/doc/libs/1_43_0/more/getting_started/windows.html#or-build-binaries-from-source .
Followed the "5.3.1 Get bjam" clause. Downloaded the "pre-built bjam executable for your platform" at this URL: http://sourceforge.net/project/showfiles.php?group_id=7586&package_id=72941 .
Extracted the ZIP file (my platform is Windows).
Ran "build.bat". It produced the file "bin.ntx86/bjam.exe".
Copied this file to my PATH ("...../boost_1_43_0/").
From a command line, executed "bjam.exe" and waited for about 4-5 minutes.
Then got this message at the console: "The Boost C++ Libraries were successfully built!"
That's it, it even tells you where the include & lib files are.
Not all Boost libraries are header only, Boost.System is one of them. The documentation for Boost.Asio tells you that it depends on Boost.System.
With Visual Studio, the Boost libraries use auto-linking, which means you don't have to explicitly link to the libraries you need. You however need to have the necessary libraries in the library search path, either globally or per-project.
If you don't want to build the Boost libraries yourself, you can use the installers provided by boostpro (only up to Boost 1.42 though at the moment). If you want to build them yourself instead, the documentation covers that well.
I had the same error and i followed the SourceForge. The link will take you to a folder of zipped lib and dll files for version of boost.You can download and unzip related library and when copied it to the related location everything gonna be alright ;)
In Visual Studio, right-click on your project, then go to properties and select:
Properties -> Configuration Properties -> Linker
There you add the full path of your library in the tab named "Additional Library Directories".
From the "Boost Getting Started Directions":
"5.2 Or, Simplified Build From Source
If you wish to build from source with Visual C++, you can use a simple build procedure described in this section. Open the command prompt and change your current directory to the Boost root directory. Then, type the following commands:
bootstrap
.\b2"
On Windows, I opened the Visual Studio Command Line from the start menu. First I types "bootstrap" and then I typed ".\b2".
Now with boost_1.50 the Boost.build is included in the zip file: check tools\build\v2\ or better read: ...boost_1_50_0/more/getting_started/windows.html